Recommended LAN interface settings for VMware SD-WAN by VeloCloud Edge Models 620, 640, 680, 840, 2000, and 3X00.
Article ID: 312355
Updated On:
Products
VMware SD-WAN by VeloCloud
Issue/Introduction
VMware SD-WAN Edge models 620, 640, 680, 840, 2000, and 3X00 may have reduced throughput if the LAN-side port is configured as Layer 2 (switched) vs. Layer 3 (routed) due to routed ports having access to DPDK network interface optimizations.
Environment
VMware SD-WAN by VeloCloud
Resolution
On VMware SD-WAN Edge 620, 640, 680, 840, 2000, and 3X00 models, configuring a LAN-side port as switched can result in a lower maximum throughput. The lower throughput is the result of DPDK network interface optimizations being unavailable on a switched port versus a routed port. It is recommended that a default routed port is not configured as a switched port for this reason. It is also recommended to configure the default switched ports to routed ports when maximum throughput is needed.
The configuration change can be done at the Edge or Profile level.
This is done by going to Configure > Profile/Edge, select the Device tab and scroll down to Interface Settings. Once there, select Edit for the Interface to be changed and then modify "Capability" as needed. Additionally, following changes are needed before clicking on the Update GE# to confirm the change.
If a static route is configured to use this interface, please configure the Interface setting under Configure > Device > Static Route Settings.
If the Edge has overridden the Profile interface configuration, please make all changes at the Edge level.
Once the configuration changes are complete and have been applied, the final step is to reboot the Edge in a prearranged maintenance window. The reboot is required to enable DPDK optimizations for the routed port. Until the Edge is rebooted the customer would observe no change in maximum throughput performance for that port.
The configuration change can be done at the Edge or Profile level.
This is done by going to Configure > Profile/Edge, select the Device tab and scroll down to Interface Settings. Once there, select Edit for the Interface to be changed and then modify "Capability" as needed. Additionally, following changes are needed before clicking on the Update GE# to confirm the change.
- Uncheck WAN Overlay, as the port will be used for LAN communication.
- Check 'Advertise' to ensure that the subnet is distributed.
- Uncheck NAT Direct traffic.
If a static route is configured to use this interface, please configure the Interface setting under Configure > Device > Static Route Settings.
If the Edge has overridden the Profile interface configuration, please make all changes at the Edge level.
Once the configuration changes are complete and have been applied, the final step is to reboot the Edge in a prearranged maintenance window. The reboot is required to enable DPDK optimizations for the routed port. Until the Edge is rebooted the customer would observe no change in maximum throughput performance for that port.
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